package com.hlf.modules.sys.controller;

import com.hlf.common.annotation.SysLog;
import com.hlf.common.exception.BusinessException;
import com.hlf.common.utils.Constant;
import com.hlf.common.utils.Constant.MenuType;
import com.hlf.common.utils.ReturnResult;
import com.hlf.modules.sys.entity.SysMenuEntity;
import com.hlf.modules.sys.service.ShiroService;
import com.hlf.modules.sys.service.SysMenuService;
import org.apache.commons.lang.StringUtils;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.List;
import java.util.Set;

/**
 * 系统菜单
 * 
 * @author chenshun
 * @email sunlightcs@gmail.com
 * @date 2016年10月27日 下午9:58:15
 */
@RestController
@RequestMapping("/sys/menu")
public class SysMenuController extends AbstractController {
    @Autowired
    private SysMenuService sysMenuService;
    @Autowired
    private ShiroService shiroService;

    /**
     * 所有菜单列表
     */
    @RequestMapping("/list")
    @RequiresPermissions("sys:menu:list")
    public List<SysMenuEntity> list(){
        List<SysMenuEntity> menuList = sysMenuService.queryList(new HashMap<String, Object>());

        return menuList;
    }

    /**
     * 选择菜单(添加、修改菜单)
     */
    @RequestMapping("/select")
    @RequiresPermissions("sys:menu:select")
    public ReturnResult select(){
        //查询列表数据
        List<SysMenuEntity> menuList = sysMenuService.queryNotButtonList();

        //添加顶级菜单
        SysMenuEntity root = new SysMenuEntity();
        root.setMenuId(0L);
        root.setName("一级菜单");
        root.setParentId(-1L);
        root.setOpen(true);
        menuList.add(root);

        return ReturnResult.ok().put("menuList", menuList);
    }

    /**
     * 角色授权菜单
     */
    @RequestMapping("/perms")
    @RequiresPermissions("sys:menu:perms")
    public ReturnResult perms(){
        //查询列表数据
        List<SysMenuEntity> menuList = null;

        //只有超级管理员，才能查看所有管理员列表
        if(getUserId() == Constant.SUPER_ADMIN){
            menuList = sysMenuService.queryList(new HashMap<String, Object>());
        }else{
            menuList = sysMenuService.queryUserList(getUserId());
        }

        return ReturnResult.ok().put("menuList", menuList);
    }

    /**
     * 菜单信息
     */
    @RequestMapping("/info/{menuId}")
    @RequiresPermissions("sys:menu:info")
    public ReturnResult info(@PathVariable("menuId") Long menuId){
        SysMenuEntity menu = sysMenuService.queryObject(menuId);
        return ReturnResult.ok().put("menu", menu);
    }

    /**
     * 保存
     */
    @SysLog("保存菜单")
    @RequestMapping("/save")
    @RequiresPermissions("sys:menu:save")
    public ReturnResult save(@RequestBody SysMenuEntity menu){
        //数据校验
        verifyForm(menu);

        sysMenuService.save(menu);

        return ReturnResult.ok();
    }

    /**
     * 修改
     */
    @SysLog("修改菜单")
    @RequestMapping("/update")
    @RequiresPermissions("sys:menu:update")
    public ReturnResult update(@RequestBody SysMenuEntity menu){
        //数据校验
        verifyForm(menu);

        sysMenuService.update(menu);

        return ReturnResult.ok();
    }

    /**
     * 删除
     */
    @SysLog("删除菜单")
    @RequestMapping("/delete")
    @RequiresPermissions("sys:menu:delete")
    public ReturnResult delete(long menuId){
        if(menuId <= 30){
            return ReturnResult.error("系统菜单，不能删除");
        }

        //判断是否有子菜单或按钮
        List<SysMenuEntity> menuList = sysMenuService.queryListParentId(menuId);
        if(menuList.size() > 0){
            return ReturnResult.error("请先删除子菜单或按钮");
        }

        sysMenuService.deleteBatch(new Long[]{menuId});

        return ReturnResult.ok();
    }

    /**
     * 用户菜单列表
     */
    @RequestMapping("/user")
    public ReturnResult user(){
        List<SysMenuEntity> menuList = sysMenuService.getUserMenuList(getUserId());
        Set<String> permissions = shiroService.getUserPermissions(getUserId());
        return ReturnResult.ok().put("menuList", menuList).put("permissions", permissions);
    }

    /**
     * 验证参数是否正确
     */
    private void verifyForm(SysMenuEntity menu){
        if(StringUtils.isBlank(menu.getName())){
            throw new BusinessException("菜单名称不能为空");
        }

        if(menu.getParentId() == null){
            throw new BusinessException("上级菜单不能为空");
        }

        //菜单
        if(menu.getType() == MenuType.MENU.getValue()){
            if(StringUtils.isBlank(menu.getUrl())){
                throw new BusinessException("菜单URL不能为空");
            }
        }

        //上级菜单类型
        int parentType = MenuType.CATALOG.getValue();
        if(menu.getParentId() != 0){
            SysMenuEntity parentMenu = sysMenuService.queryObject(menu.getParentId());
            parentType = parentMenu.getType();
        }

        //目录、菜单
        if(menu.getType() == MenuType.CATALOG.getValue() ||
                menu.getType() == MenuType.MENU.getValue()){
            if(parentType != MenuType.CATALOG.getValue()){
                throw new BusinessException("上级菜单只能为目录类型");
            }
            return ;
        }

        //按钮
        if(menu.getType() == MenuType.BUTTON.getValue()){
            if(parentType != MenuType.MENU.getValue()){
                throw new BusinessException("上级菜单只能为菜单类型");
            }
            return ;
        }
    }
}
